Five themes to watch for in Canada

Can Ferrari challenge Vettel? Will the rain hit Montreal on Sunday? And what's the best strategy for the race? Edd Straw analyses the pre-race storylines

Ferrari revival

It's been a while since two Ferraris have qualified in the top three. You have to go back to last September's Italian Grand Prix to find a race where a pair of prancing horses have lined up so promisingly. Red Bull's single-lap dominance has not always translated into race day supremacy so far this season and if that pattern continues, you can expect Fernando Alonso and Felipe Massa to be in the thick of the fight for victory. The early laps could be key.

Assuming that Vettel gets away in the lead, and that's a big if based on the evidence of the Spanish Grand Prix, he has a simple challenge. By the exit of the hairpin on the third lap, he needs to be a minimum of a second clear of whoever is behind him, most likely one or both of the Ferraris, to avoid falling into their clutches in the DRS activation zone.